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http://dx.doi.org/10.5394/KINPR.2005.29.6.589

Adsorption of nitrate from contaminated sea water with activated dredged sediment  

Song Young-Chae (Division of Civil and Environmental System Engineering, Korea Maritime University)
Woo Jung-Hui (Division of Civil and Environmental System Engineering, Korea Maritime University)
Jung Eun-Hye (Division of Civil and Environmental System Engineering, Korea Maritime University)
Go Sung-Jung (Fisheries Education Team, Korea Institute of Maritime and Fisheries Technology)
Kim Dong-Geun (Fisheries Education Team, Korea Institute of Maritime and Fisheries Technology)
Publication Information
Journal of Navigation and Port Research / v.29, no.6, 2005 , pp. 589-593 More about this Journal
Abstract
A laboratory study on the adsorption of nitrate in polluted coastal water using various materials including several types of dredged sediments(ST) and yellow c1ays(YC), which are activated by heat(HT), bioleaching for heavy metal removal(BL) and neutralization(NR) was performed. The equilibrium time of the adsorption for the sediment bioleached and treated by heat(BL-HT-ST) was only 17min which was faster than the sediment bioleached, neutralized and treated by heat(BL-NR-HT-S) (25min) or the sediment treated by the bioleaching process(BL -ST)(27min), but longer equilibrium times for yellow c1ay(YC) or heat treated yellow day(HT- YC) were required. The adsorption processes of nitrate in sea water for tested material could be described by Freundlich isotherm, but were significantly affected by surface characteristics of the materials. The adsorption capacities for raw sediment and heat treated sediment were 2.12 and 2.19mg NO3-N/g, respectively, which were higher than others, indicating that the sediment activated by heat could be used as a material for the improvement of nearshore water quality.
Keywords
Activated sediment; Adsorption; Nitrate removal; Sea water quality;
Citations & Related Records
Times Cited By KSCI : 1  (Citation Analysis)
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